Lexus LS430 License Plate Bulb Size

The Lexus LS430 license plate light requires a 168 bulb size for proper illumination of the rear exterior area. Data for the specified lighting component covers the 2001 to 2006 range.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2001-2006	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The 168 bulb is the specified license plate bulb size for the Lexus LS430 across all listed model years, spanning 2001-2006.
The 168 bulb follows the ANSI standard, which is the American National Standards Institute classification system used to define bulb specifications in the United States and Canada.
It is a T10 miniature wedge-base bulb, where "T10" refers to the tubular bulb shape with a width of 10 millimeters and "wedge" describes the base type, which uses the bulb's own glass envelope pinched at the bottom to make electrical contact rather than a separate metal base.
The 168 operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
The rated wattage of 4.9W places the 168 in the low-power range typical of license plate and interior lighting applications, where heat output and current draw are kept minimal.
The wedge base design of the T10 means the bulb is held in place by friction within its socket, and any direct replacement must share this base type to seat correctly and maintain electrical contact.
Although the 168 and the closely related 194 bulb share the T10 wedge form, they differ in wattage, with the 194 rated at 3.8W, making the two types not fully interchangeable in all applications despite their physical similarity.